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Additional collections of scanned books, articles, and other texts (usually organized by topic) are presented here.

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Arxiv.org
Sep 25, 2013 Konosuke Sawa
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We investigate the contribution of extra dimensions to the muon anomalous magnetic moment by using an ADD-type 6-dimensional model. This approach analyzes the extent of the influence of classical brane fluctuations on the magnetic moment. When we consider that the brane fluctuations are static in time, they add new potential terms to the Schr{\"o}dinger equation through the induced vierbein. This paper shows that the brane fluctuation is responsible for the brane-stretching effect. This...
Source: http://arxiv.org/abs/hep-ph/0506190v4
Arxiv.org
Sep 24, 2013
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Topics: arxiv, metadata
Arxiv.org
Sep 24, 2013 K. A. Bronnikov; E. V. Donskoy
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A black universe is a nonsingular black hole where, beyond the horizon, there is an expanding, asymptotically isotropic universe. Such models have been previously found as solutions of general relativity with a phantom scalar field as a source of gravity and, without phantoms, in a brane world of RS2 type. Here we construct examples of static, spherically symmetric black-universe solutions in general relativity with a minimally coupled scalar field \phi whose kinetic energy is negative in a...
Source: http://arxiv.org/abs/1110.6030v1
Arxiv.org
Sep 24, 2013 George Hobbs
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Pulsar timing array projects are carrying out high precision observations of millisecond pulsars with the aim of detecting ultra-low frequency (~ 10^{-9} to 10^{-8} Hz) gravitational waves. We show how unambiguous detections of such waves can be obtained by identifying a signal that is correlated between the timing of different pulsars. Here we describe the ongoing observing projects, the expected sources of gravitational waves, the processing of the data and the implications of current results.
Source: http://arxiv.org/abs/1006.3969v1
Arxiv.org
Sep 24, 2013 Spiros A. Argyros; Pavlos Motakis
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A reflexive hereditarily indecomposable Banach space $\mathfrak{X}_{_{^\text{ISP}}}$ is presented, such that for every $Y$ infinite dimensional closed subspace of $\mathfrak{X}_{_{^\text{ISP}}}$ and every bounded linear operator $T:Y\rightarrow Y$, the operator $T$ admits a non-trivial closed invariant subspace.
Source: http://arxiv.org/abs/1111.3603v3
Arxiv.org
Sep 24, 2013 Anton S. Galaev
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If the holonomy algebra $\mathfrak{g}\subset\mathfrak{so}(1,n-1)$ of a locally indecomposable Lorentzian manifold $(M,g)$ of dimension $n$ is different from $\mathfrak{so}(1,n-1)$, then it is contained in the similitude algebra $\mathfrak{sim}(n-2)$. There are 4 types of such holonomy algebras. We give criterion how to find the type of $\mathfrak{g}$. To each $\mathfrak{g}$ there is a canonically associated subalgebra $\mathfrak{h}\subset\mathfrak{so}(n-2)$. We provide an algorithm how to find...
Source: http://arxiv.org/abs/1110.1998v1
Arxiv.org
Sep 24, 2013 N. E. Mavromatos
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In these lectures I review, in as much pedagogical way as possible, various theoretical ideas and motivation for violation of CPT invariance in some models of Quantum Gravity, and discuss the relevant phenomenology. Since the subject is vast, I pay particular emphasis on the CPT Violating decoherence scenario for quantum gravity, due to space-time foam. In my opinion this seems to be the most likely scenario to be realised in Nature, should quantum gravity be responsible for the violation of...
Source: http://arxiv.org/abs/gr-qc/0407005v1
Arxiv.org
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A search for the standard model Higgs boson (H) decaying to a b-quark pair when produced in association with weak vector bosons (V) is reported for the following modes: W(mu,nu)H, W(e,nu)H, Z(mu,mu)H, Z(e,e)H and Z(nu,nu)H. The search is performed in a data sample corresponding to an integrated luminosity of 4.7 inverse femtobarns, recorded by the CMS detector in proton-proton collisions at the LHC with a center-of-mass energy of 7 TeV. No significant excess of events above the expectation from...
Source: http://arxiv.org/abs/1202.4195v1
Arxiv.org
Sep 24, 2013 K. Ebisawa; A. Paizis; T. J. -L. Couvoisier; P. Dubath; M. Tsujimoto; K. Hamaguchi; V. Beckmann; A. Bamba; A. Senda; M. Ueno; H. Kaneda; Y. Maeda; G. Sato; S. Yamauchi; R. Cutri; E. Nishihara
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Using the Chandra ACIS-I instruments, we have carried out a deep X-ray observation on the Galactic plane region at (l,b) ~ (28.5, 0.0), where no discrete X-ray sources have been known previously. We have detected, as well as strong diffuse emission, 274 new point X-ray sources (4 sigma confidence) within two partially overlapping fields (~250 arcmin^2 in total) down to the flux limit ~3 x 10^{-15} $ erg s^{-1} cm^{-2} (2 -- 10 keV) and ~ 7 x 10^{-16} erg s^{-1} cm^{-2} (0.5 -- 2 keV). We...
Source: http://arxiv.org/abs/astro-ph/0407205v1
Arxiv.org
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Particle production of identified charged hadrons, $\pi^{\pm}$, $K^{\pm}$, $p$, and $\bar{p}$ in Au+Au collisions at $\sqrt(snn) =$ 200 GeV has been studied as a function of transverse momentum and collision centrality at $y=0$ and $y\sim1$ by the BRAHMS experiment at RHIC. Significant collective transverse flow at kinetic freeze-out has been observed in the collisions. The magnitude of the flow rises with the collision centrality. Proton and kaon yields relative to the pion production increase...
Source: http://arxiv.org/abs/nucl-ex/0503010v3
Arxiv.org
Sep 24, 2013 V. I. Abrosimov; A. Dellafiore; F. Matera
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A semiclassical model based on the solution of the Vlasov equation for finite systems with a sharp moving surface has been used to study the isoscalar quadrupole and octupole collective modes in heavy spherical nuclei. Within this model, a unified description of both low-energy surface modes and higher-energy giant resonances has been achieved by introducing a coupling between surface vibrations and the motion of single nucleons. Analytical expressions for the collective response functions of...
Source: http://arxiv.org/abs/nucl-th/0407015v1
Arxiv.org
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We present direct numerical simulations and Lagrangian averaged (also known as alpha-model) simulations of forced and free decaying magnetohydrodynamic turbulence in two dimensions. The statistics of sign cancellations of the current at small scales is studied using both the cancellation exponent and the fractal dimension of the structures. The alpha-model is found to have the same scaling behavior between positive and negative contributions as the direct numerical simulations. The alpha-model...
Source: http://arxiv.org/abs/physics/0506088v2
Arxiv.org
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Here an original idea is suggested to prove the existence of optimal control for some types of non- linear problems. The obtained results can be considered as individual existence theorems (in some sense).
Source: http://arxiv.org/abs/math/0506364v1
Arxiv.org
Sep 24, 2013 Shina Tan; K. Levin
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We present a new many body formalism for BCS-BEC crossover, which represents a modification of the BCS-Leggett ground state to include 4-fermion, and higher correlations. In the BEC regime, we show how our approach contains the \textit{Petrov et al} 4-fermion behavior and associated scattering length $a_{dd}$ at short distances, and secondly reduces to composite-boson Bogoliubov physics at long distances. It reproduces the Lee-Yang term, whose numerical value is also fixed by $a_{dd}$. We have...
Source: http://arxiv.org/abs/cond-mat/0506293v2
Arxiv.org
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The structure of super Yang_Mills theories is discussed in its relation to QCD with one flavor of (tricolored) quark
Source: http://arxiv.org/abs/hep-th/0506163v1
Arxiv.org
Sep 24, 2013 M. Matuszewski; E. Infeld; G. Rowlands; M. Trippenbach
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We investigate the stability properties of breather soliton trains in a three-dimensional Bose-Einstein Condensate with Feshbach Resonance Management of the scattering length. This is done so as to generate both attractive and repulsive interaction. The condensate is con ned only by a one dimensional optical lattice and we consider both strong, moderate, and weak con nement. By strong con nement we mean a situation in which a quasi two dimensional soliton is created. Moderate con nement admits...
Source: http://arxiv.org/abs/cond-mat/0506534v1
Arxiv.org
Sep 24, 2013 J. Martinez-Sykora; V. Hansteen; M. Carlsson
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3D simulations of magnetic flux emergence are carried out in a computational domain spanning the upper layers of the convection zone to the lower corona. We use the Oslo Staggered Code to solve the full MHD equations with non-grey and NLTE radiative transfer and thermal conduction along the magnetic field lines. In this paper we concentrate on the later stages of the simulations and study the evolution of the structure of the rising flux in the upper chromosphere and corona, the interaction...
Source: http://arxiv.org/abs/0906.5464v1
Arxiv.org
Sep 24, 2013 Daniele Alessandrini; Alberto Saracco
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We prove that elliptic tubes over properly convex domains of the real projective space are C-convex and complete Kobayashi-hyperbolic. We also study a natural construction of complexification of convex real projective manifolds.
Source: http://arxiv.org/abs/1002.3338v1
Arxiv.org
Sep 24, 2013 P. Capel; G. Goldstein; D. Baye
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The breakup of 11Be on carbon and lead targets around 70 MeV/nucleon is investigated within a semiclassical framework. The role of the 5/2+ resonance is analyzed in both cases. It induces a narrow peak in the nuclear-induced breakup cross section, while its effect on Coulomb breakup is small. The nuclear interactions between the projectile and the target is responsible for the transition toward this resonant state. The influence of the parametrization of the 10Be-n potential that simulates 11Be...
Source: http://arxiv.org/abs/nucl-th/0506008v1
Arxiv.org
Sep 24, 2013 F. Cavaliere; A. Braggio; M. Sassetti; B. Kramer
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The current-voltage characteristic of a one dimensional quantum dot connected via tunnel barriers to interacting leads is calculated in the region of sequential tunneling. The spin of the electrons is taken into account. Non-Fermi liquid correlations implying spin-charge separation are assumed to be present in the dot and in the leads. It is found that the energetic distance of the peaks in the linear conductance shows a spin-induced parity effect at zero temperature T. The temperature...
Source: http://arxiv.org/abs/cond-mat/0407170v1
Arxiv.org
Sep 24, 2013 Maria Joao Oliveira; Habib Ouerdiane; Jose Luis da Silva; R. Vilela Mendes
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The Mittag-Leffler function $E_{\alpha}$ being a natural generalization of the exponential function, an infinite-dimensional version of the fractional Poisson measure would have a characteristic functional \[ C_{\alpha}(\phi) :=E_{\alpha}(\int (e^{i\phi(x)}-1)d\mu (x)) \] which we prove to fulfill all requirements of the Bochner-Minlos theorem. The identity of the support of this new measure with the support of the infinite-dimensional Poisson measure ($\alpha =1$) allows the development of a...
Source: http://arxiv.org/abs/1002.2124v1
Arxiv.org
Sep 24, 2013 Caterina Consani; Matilde Marcolli
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Archimedean cohomology provides a cohomological interpretation for the calculation of the local L-factors at archimedean places as zeta regularized determinant of a log of Frobenius. In this paper we investigate further the properties of the Lefschetz and log of monodromy operators on this cohomology. We use the Connes-Kreimer formalism of renormalization to obtain a fuchsian connection whose residue is the log of the monodromy. We also present a dictionary of analogies between the geometry of...
Source: http://arxiv.org/abs/math/0407480v1
Arxiv.org
Sep 24, 2013 P. Lodahl
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We investigate frequency correlations in multiple scattered light that are present in the quantum fluctuations. The memory effect for quantum and classical noise is compared, and found to have markedly different frequency scaling, which was confirmed in a recent experiment. Furthermore, novel mesoscopic correlations are predicted that depend on the photon statistics of the incoming light.
Source: http://arxiv.org/abs/quant-ph/0506264v1
Arxiv.org
Sep 24, 2013 Jake Bowers; Mark Fredrickson; Costas Panagopoulos
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If an experimental treatment is experienced by both treated and control group units, tests of hypotheses about causal effects may be difficult to conceptualize let alone execute. In this paper, we show how counterfactual causal models may be written and tested when theories suggest spillover or other network-based interference among experimental units. We show that the "no interference" assumption need not constrain scholars who have interesting questions about interference. We offer...
Source: http://arxiv.org/abs/1208.0366v1
Arxiv.org
Sep 24, 2013 John Feldmeier; Robin Ciardullo; George Jacoby; Patrick Durrell
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Intracluster planetary nebulae are a useful tracer of the evolution of galaxies and galaxy clusters. We analyze our catalog of 318 intracluster planetary nebulae candidates found in 0.89 square degrees of the Virgo cluster. We give additional evidence for the great depth of the Virgo cluster's intracluster stellar population, which implies that the bulk of the intracluster stars come from late-type galaxies and dwarfs. We also provide evidence that the intracluster stars are clustered on the...
Source: http://arxiv.org/abs/astro-ph/0407274v3
Arxiv.org
Sep 24, 2013 N. J. Nunes; A. C. da Silva; N. Aghanim
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In the simple case of a constant equation of state, redshift distribution of collapsed structures may constrain dark energy models. Different dark energy models having the same energy density today but different equations of state give quite different number counts. Moreover, we show that introducing the possibility that dark energy collapses with dark matter (``inhomogeneous'' dark energy) significantly complicates the picture. We illustrate our results by comparing four dark energy models to...
Source: http://arxiv.org/abs/astro-ph/0506043v2
Arxiv.org
Sep 24, 2013 Marcus Hutter; Andrej Muchnik
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Solomonoff's central result on induction is that the posterior of a universal semimeasure M converges rapidly and with probability 1 to the true sequence generating posterior mu, if the latter is computable. Hence, M is eligible as a universal sequence predictor in case of unknown mu. Despite some nearby results and proofs in the literature, the stronger result of convergence for all (Martin-Loef) random sequences remained open. Such a convergence result would be particularly interesting and...
Source: http://arxiv.org/abs/cs/0407057v1
Arxiv.org
Sep 24, 2013 A. M. Hopkins
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The evolution in the comoving space density of the global average galaxy star formation rate (SFR) out to a redshift around unity is well established. Beyond z~1 there is growing evidence that this evolution is flat or even increasing, contrary to early indications of a turnover. Some recent analyses of z~6 photometric dropouts are suggestive of a decline from z=3 to z~6, but there is still very little constraint on the extent of dust obscuration at such high redshifts. In less than a decade,...
Source: http://arxiv.org/abs/astro-ph/0407170v1
Arxiv.org
Sep 24, 2013 Roman Sverdlov
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In this paper we will utilize the non-trivial shapes of the strings in order to come up with realistic definition of probability amplitudes in a lot more natural way than could be done in point particle counterpart. We then go on to "translate" GRW model to string theory context. In this paper we limit ourselves to boson-only toy model without D-branes.
Source: http://arxiv.org/abs/1206.1040v2
Arxiv.org
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The D'yakonov-Perel' mechanism, intimately related to the spin splitting of the electronic states, usually dominates the spin relaxation in zinc blende semiconductor quantum structures. Previously it has been formulated for the two limiting cases of low and high temperatures. Here we extend the theory to give an accurate description of the intermediate regime which is often relevant for room temperature experiments. Employing the self-consistent multiband envelope function approach, we...
Source: http://arxiv.org/abs/cond-mat/0407348v1
Arxiv.org
Sep 24, 2013 Dale C. Jackson; Evan D. Skillman; John M. Cannon; Stephanie Cote
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We present Australia Telescope Compact Array mosaic HI imaging of the Local Group dwarf irregular galaxy WLM. We find an integrated flux of 149 Jy km/s and a total HI mass of 3.2 x 10^7 solar masses. The major axis of the HI is aligned with the stellar component of the galaxy. The overall HI distribution is relatively smooth at our resolution and has a double peaked central core. One of these peaks is aligned with a region found to have extinction that is internal to WLM and we take this as...
Source: http://arxiv.org/abs/astro-ph/0407116v1
Arxiv.org
Sep 24, 2013 E. Flesch; M. J. Hardcastle
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We present an all-sky catalogue that aligns and overlays the ROSAT HRI, RASS, PSPC and WGA X-ray catalogues and the NVSS, FIRST and SUMSS radio catalogues onto the optical APM and USNO-A catalogues. Objects presented are those APM/USNO-A optical objects which are calculated with >= 40% confidence to be associated with radio/X-ray detections, or which are identified as known QSOs, AGN or BL Lacs, totalling 501,761 objects in all, including 48,285 QSOs and 21,498 double radio lobe detections....
Source: http://arxiv.org/abs/astro-ph/0407310v1
Arxiv.org
Sep 24, 2013 Pritam Ganguly; Stephen A. Vavasis; Katerina D. Papoulia
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We propose a new two-dimensional meshing algorithm called PINW able to generate meshes that accurately approximate the distance between any two domain points by paths composed only of cell edges. This technique is based on an extension of pinwheel tilings proposed by Radin and Conway. We prove that the algorithm produces triangles of bounded aspect ratio. This kind of mesh would be useful in cohesive interface finite element modeling when the crack propagation pathis an outcome of a simulation...
Source: http://arxiv.org/abs/cs/0407018v2
Arxiv.org
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The contribution of Lambda hyperons to neutrino scattering rates is calculated in the random phase approximation in a model where the interaction is described by a Skyrme potential. Finite temperature and neutrino trapping are taken into account in view of applications to the deleptonization stage of protoneutron star cooling. The hyperons can remove the problem of ferromagnetic instability common to (nearly) all Skyrme parametrizations of the nucleon-nucleon interaction. As a consequence,...
Source: http://arxiv.org/abs/nucl-th/0407084v1
Arxiv.org
Sep 24, 2013 Shin Muroya; Atsushi Nakamura; Chiho Nonaka
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Using two-color lattice QCD with Wilson fermions, we report a study of the finite baryon number density system with two-flavors. First we investigate the Polyakov line and thermodynamical uantities in the $(\kappa,\mu)$ plane, where $\kappa$ and $\mu$ are the hopping parameter and chemical potential in the fermion action, respectively. Then we calculate propagators of meson ($\bar{q}\Gamma q$) and baryon ($q\Gamma q$) states. We find that the vector meson propagators are strongly modified in...
Source: http://arxiv.org/abs/hep-lat/0211010v2
Arxiv.org
Sep 24, 2013 Michael Fowler; Joseph A. Minahan
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Using a formalism developed by Polychronakos, we explicitly construct a set of invariants of the motion for the Haldane-Shastry $SU(N)$ chain.
Source: http://arxiv.org/abs/cond-mat/9208016v1
Arxiv.org
Sep 24, 2013 Paulina Marian; Tudor A. Marian
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In contrast to discrete-variable teleportation, a quantum state is imperfectly transferred from a sender to a remote receiver in a continuous-variable setting. We recall the ingenious scheme proposed by Braunstein and Kimble for teleporting a one-mode state of the quantum radiation field. By analyzing this protocol, we have previously proven the factorization of the characteristic function of the output state. This indicates that teleportation is a noisy process that alters, to some extent, the...
Source: http://arxiv.org/abs/0911.1430v1
Arxiv.org
Sep 24, 2013 Manuel Bodirsky; Omer Gimenez; Mihyun Kang; Marc Noy
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We show that the number $g_n$ of labelled series-parallel graphs on $n$ vertices is asymptotically $g_n \sim g\cdot n^{-5/2} \gamma^n n!$, where $\gamma$ and $g$ are explicit computable constants. We show that the number of edges in random series-parallel graphs is asymptotically normal with linear mean and variance, and that the number of edges is sharply concentrated around its expected value. Similar results are proved for labelled outerplanar graphs and for graphs not containing $K_{2,3}$...
Source: http://arxiv.org/abs/math/0512435v1
Arxiv.org
Sep 24, 2013 Ioannis Giannakis; James T. Liu; Hai-cang Ren
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We present a linearized gravity investigation of the bent braneworld, where an AdS_4 brane is embedded in AdS_5. While we focus on static spherically symmetric mass distributions on the brane, much of the analysis continues to hold for more general configurations. In addition to the identification of the massive Karch-Randall graviton and a tower of Kaluza-Klein gravitons, we find a radion mode that couples to the trace of the energy-momentum tensor on the brane. The Karch-Randall radion arises...
Source: http://arxiv.org/abs/hep-th/0211196v2
Arxiv.org
Sep 24, 2013 I. G. Lang; S. T. Pavlov
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The light reflectance and absorbance are calculated for a quantum well (QW) the width of which is comparable with the light wave length. The difference of the refraction coefficients of the quantum well and barriers is taken into account. The stimulating pulse form is arbitrary. An existence of two closely situated discrete excitation energy levels is supposed. Such energy level pare may correspond to two magnetopolaron states in a quantizing magnetic field perpendicular to the QW plane. The...
Source: http://arxiv.org/abs/1002.1780v1
Arxiv.org
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We show that a stable spontaneous current appears in a system of a spin density wave order with merons, vortices in the spin configuration with winding number +1. A meron in the spin density wave order modifies the boundary condition for eigenfunctions around it to a sign-change one. As a consequence, two types of stable current states, one with a clockwise circulation and the other with a counterclockwise one, arise. When a magnetic field is present, one produces a diamagnetic current is...
Source: http://arxiv.org/abs/cond-mat/0506747v1
Arxiv.org
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Table of contents 1. Introduction 2. Non-Fermi-liquid features of Fermi liquids: 1D physics in higher dimensions 3. Dzyaloshinskii-Larkin solution of the Tomonaga-Luttinger model 4. Renormalization group for interacting fermions 5. Single impurity in a 1D system: scattering theory for interacting electrons 6. Bosonization solution 7. Transport in quantum wires 7.1 Conductivity and conductance 7.2 Dissipation in a contactless measurement 7.3 Conductance of a wire attached to reservoirs 7.4 Spin...
Source: http://arxiv.org/abs/cond-mat/0506035v1
Arxiv.org
Sep 24, 2013 Christian Ausoni; John Rognes
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We compute the algebraic K-theory modulo p and v_1 of the S-algebra ell/p = k(1), using topological cyclic homology. We use this to compute the homotopy cofiber of a transfer map K(L/p) --> K(L_p), which we interpret as the algebraic K-theory of the "fraction field" of the p-complete Adams summand of topological K-theory. The results suggest that there is an arithmetic duality theorem for this fraction field, much like Tate--Poitou duality for p-adic fields.
Source: http://arxiv.org/abs/0911.4781v1
Arxiv.org
Sep 24, 2013 E. -W. Scheidt; F. Mayr; U. Killer; W. Scherer; H. Michor; E. Bauer; S. Kehrein; Th. Pruschke; F. Anders
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CeNi$_{9}$Ge$_4$ exhibits unusual non-Fermi liquid behavior with the largest ever recorded value of the electronic specific heat $\Delta C/T \cong 5.5$ JK$^{-2}$mol$^{-1}$ without showing any evidence of magnetic order. Specific heat measurements show that the logarithmic increase of the Sommerfeld coefficient flattens off below 200 mK. In marked contrast, the local susceptibility $\Delta\chi$ levels off well above 200 mK and already becomes constant below 1 K. Furthermore, the entropy reaches...
Source: http://arxiv.org/abs/cond-mat/0506163v1
Arxiv.org
Sep 24, 2013 Zakhar Kabluchko
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Let $\xi_i$, $i\in \mathbb {N}$, be independent copies of a L\'{e}vy process $\{\xi(t),t\geq0\}$. Motivated by the results obtained previously in the context of the random energy model, we prove functional limit theorems for the process \[Z_N(t)=\sum_{i=1}^N\mathrm{e}^{\xi_i(s_N+t)}\] as $N\to\infty$, where $s_N$ is a non-negative sequence converging to $+\infty$. The limiting process depends heavily on the growth rate of the sequence $s_N$. If $s_N$ grows slowly in the sense that...
Source: http://arxiv.org/abs/0911.4139v2
Arxiv.org
Sep 24, 2013 Wei-Xing Zhou; Didier Sornette
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We analyze the quarterly average sale prices of new houses sold in the USA as a whole, in the northeast, midwest, south, and west of the USA, in each of the 50 states and the District of Columbia of the USA, to determine whether they have grown faster-than-exponential which we take as the diagnostic of a bubble. We find that 22 states (mostly Northeast and West) exhibit clear-cut signatures of a fast growing bubble. From the analysis of the S&P 500 Home Index, we conclude that the turning...
Source: http://arxiv.org/abs/physics/0506027v1
Arxiv.org
Sep 24, 2013 L. E. H. Godfrey; P. J. Francis
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We study the contents of an apparent void in the distribution of Ly-alpha emitting galaxies at redshift 2.38. We show that this void is not empty, but contains a damped Ly-alpha absorption-line system, seen in absorption against background QSO 2138-4427. Imaging does not reveal any galaxy associated with this absorption-line system, but it contains metals (Fe/H ~ -1.3), and its large velocity range (~ 180 km/s) implies a significant mass.
Source: http://arxiv.org/abs/astro-ph/0506525v1
Arxiv.org
Sep 24, 2013 Keshav N. Shrivastava
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The paper of Arovas, Schrieffer and Wilczek is corrected. It is found that the Berry's phase is vanishingly small. Accordingly, the statistical vector potential becomes negligibly small.
Source: http://arxiv.org/abs/cond-mat/0211351v1
Arxiv.org
Sep 24, 2013 Joerg B Goette; Sonja Franke-Arnold; Stephen M. Barnett
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The violation of local uncertainty relations is a valuable tool for detecting entanglement, especially in multi-dimensional systems. The orbital angular momentum of light provides such a multi-dimensional system. We study quantum correlations for the conjugate variables of orbital angular momentum and angular position. We determine an experimentally testable criterion for the demonstration of an angular version of the EPR paradox. For the interpretation of future experimental results from our...
Source: http://arxiv.org/abs/quant-ph/0506240v1
Arxiv.org
Sep 24, 2013 Ian Todd; Don Pollacco; Ian Skillen; D. M. Bramich; Steve Bell; Thomas Augusteijn
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Results of an archival survey are presented using B-band imaging of the eastern spiral arm of M31. Focusing on the eclipsing binary star population, a matched-filter technique has been used to identify 280 binary systems. Of these, 127 systems (98 of which are newly discovered) have sufficient phase coverage to allow accurate orbital periods to be determined. At least nine of these binaries are detached systems which could, in principle, be used for distance determination. The light curves of...
Source: http://arxiv.org/abs/astro-ph/0506568v1
We discuss a mixture of interacting a neutral and a charged Bose condensates, which is supposed being realized in interior of neutron stars in form of coexistent neutron superfluid and protonic superconductor. We show that in this system, besides ordinary vortices of $S^1\to S^1$ map, the neutron condensate also allows for (meta)stable finite-length knotted solitons, which are characterized by a nontrivial Hopf invariant and in some circumsatnces are stablized by Faddeev-Skyrme term induced by...
Source: http://arxiv.org/abs/astro-ph/0211345v4
Arxiv.org
Sep 24, 2013 Raj Gandhi; Pomita Ghoshal; Srubabati Goswami; Poonam Mehta; S Uma Sankar
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The neutrino mass hierarchy, presently unknown, is a powerful discriminator among various classes of unification theories. We show that the $\nu_{\mu} + \bar{\nu}_\mu$ survival rate in atmospheric events can provide a novel method of determining the hierarchy in megaton water Cerenkov detectors. For pathlength and energy ranges relevant to atmospheric neutrinos,this rate obtains significant matter sensitive variations not only from resonant matter effects in $P_{\mu e}$ but also from those in...
Source: http://arxiv.org/abs/hep-ph/0506145v2
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Sep 24, 2013 Graciela B. Gelmini
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We show that the annual modulation signal observed by DAMA can be reconciled with all other negative results from dark matter searches with a conventional halo model for particle masses around 5 to 9 GeV. We also show which particular dark matter stream could produce the DAMA signal.
Source: http://arxiv.org/abs/hep-ph/0512266v1
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Sep 24, 2013 K. Astala; A. Clop; X. Tolsa; I. Uriarte-Tuero; J. Verdera
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In this paper we prove the sharp distortion estimates for the quasiconformal mappings in the plane, both in terms of the Riesz capacities from non linear potential theory and in terms of the Hausdorff measures.
Source: http://arxiv.org/abs/1002.1038v1
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Sep 24, 2013 Monika Möddel; Wolfhard Janke; Michael Bachmann
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In detailed microcanonical analyses of densities of states obtained by extensive multicanonical Monte Carlo computer simulations, we investigate the caloric properties of conformational transitions adsorbing polymers experience near attractive substrates. For short chains and strong surface attraction, the microcanonical entropy turns out to be a convex function of energy in the transition regime, indicating that surface-entropic effects are relevant. Albeit known to be a continuous transition...
Source: http://arxiv.org/abs/1002.2000v1
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Sep 24, 2013 Jize Zhao; Kazuo Ueda
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We investigate the effect of anharmonicity on the one-dimensional half-filled Holstein model by using the determinant quantum Monte Carlo method. By calculating the order parameters we find that with and without anharmonicity there is always an transition from a disorder phase to a dimerized phase. Moreover, in the dimerized phase a lattice dimerization and a charge density wave coexist. The anharmonicity represented by the quartic term suppresses the dimerization as well as the charge density...
Source: http://arxiv.org/abs/1002.0315v1
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Sep 24, 2013 Andreas Luscher; Andreas Laeuchli; Weihong Zheng; Oleg P. Sushkov
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Motivated by the possible charge ordering in the recently discovered superconductor Na_xCoO_2 yH_2O, which at filling x=1/3 would correspond to a half-filled honeycomb lattice, we investigate the single-hole dynamics of the t-J model on this lattice. Using exact diagonalization, series expansion and the self-consistent Born approximation, we calculate the quasi-particle dispersion, bandwidth and residues and compare our findings with the well established results for the square lattice. Given...
Source: http://arxiv.org/abs/cond-mat/0512074v2
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Sep 24, 2013 P. R. Crompton
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We disprove the Vafa-Witten theorem on the impossibility of spontaneously breaking parity in vector-like gauge field theories, identifying a mechanism driven by quantum fluctuations. With the introduction of a meromorphic Lattice formulation, defined over 5 dimensions, we demonstrate that the minima of the free energy can be distinct from the maxima of the partition function : identifying and evaluating a suitable contour for the partition function defined such that asymptotic behaviour of the...
Source: http://arxiv.org/abs/hep-lat/0506028v1
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Sep 24, 2013 T. Masuda; S. Kitaoka; S. Takamizawa; N. Metoki; K. Kaneko; K. C. Rule; K. Kiefer; H. Manaka; H. Nojiri
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Spin dynamics of the square lattice Heisenberg antiferromagnet, \BaMnGeO, is studied by a combination of bulk measurements, neutron diffraction, and inelastic neutron scattering techniques. Easy plane type antiferromagnetic order is identified at $T \le 4.0$ K. The exchange interactions are estimated as $J_1$ = 27.8(3)${\mu}$eV and $J_2$ = 1.0(1) ${\mu}$eV, and the saturation field $H_{\rm C}$ is 9.75 T. Magnetic excitation measurements with high experimental resolution setup by triple axis...
Source: http://arxiv.org/abs/1002.2470v1
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Sep 24, 2013 Stephen L. Bloom; Zoltan Esik
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An algebraic linear ordering is a component of the initial solution of a first-order recursion scheme over the continuous categorical algebra of countable linear orderings equipped with the sum operation and the constant 1. Due to a general Mezei-Wright type result, algebraic linear orderings are exactly those isomorphic to the linear ordering of the leaves of an algebraic tree. Using Courcelle's characterization of algebraic trees, we obtain the fact that a linear ordering is algebraic if and...
Source: http://arxiv.org/abs/1002.1624v2
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Sep 24, 2013 A. Drezet; A. Siria; J. Chevrier; S. Huant
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It has been shown recently [PRL 102, 254503 (2009)] that in the plane-plane configuration a mechanical resonator vibrating close to a rigid wall in a simple fluid can be overdamped to a frozen regime. Here, by solving analytically the Navier Stokes equations with partial slip boundary conditions at the solid fluid interface, we develop a theoretical approach justifying and extending these earlier findings. We show in particular that in the perfect slip regime the above mentioned results are, in...
Source: http://arxiv.org/abs/1002.0714v1
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Sep 24, 2013 Andreas Brzank; Sungchul Kwon; Gunter Schuetz
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We study the conditions for reactivity enhancement of catalytic processes in porous solids by use of molecular traffic control (MTC) as a function of grain size. We extend a recently introduced two dimensional model system to three dimensions. With dynamic Monte-Carlo simulations and analytical solution of the associated Master equation we obtain a quantitative description of the MTC effect in the limit of fast reactivity. The efficiency ratio (compared with a topologically and structurally...
Source: http://arxiv.org/abs/cond-mat/0506197v3
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Sep 24, 2013 Norbert J. Mauser; Saber Trabelsi
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The multiconfiguration methods are widely used by quantum physicists and chemists for numerical approximation of the many electron Schr\"odinger equation. Recently, first mathematically rigorous results were obtained on the time-dependent models, e.g. short-in-time well-posedness in the Sobolev space $H^2$ for bounded interactions (C. Lubichand O. Koch} with initial data in $H^2$, in the energy space for Coulomb interactions with initial data in the same space (Trabelsi, Bardos et al.}, as...
Source: http://arxiv.org/abs/1002.1816v1
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Sep 24, 2013 Dong Pyo Chi; Kabgyun Jeong
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We show that a quantum channel $\mathcal{N}$ constructed by averaging over $\mathcal{O}(\log d/\epsilon^2)$ randomly chosen unitaries gives a local $\epsilon$-randomizing map with non-negative probability. The idea comes from a small $\epsilon$-net construction on the higher dimensional unit sphere or quantum pure states. By exploiting the net, we analyze the concentrative phenomenon of an output reduced density matrix of the channel, and this analysis imply that there exists a local random...
Source: http://arxiv.org/abs/1002.3427v1
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Sep 24, 2013 M. Revnivtsev; R. Burenin; I. Bikmaev; A. Kniazev; D. A. H. Buckley; M. L. Pretorius; I. Khamitov; T. Ak; Z. Eker; S. Melnikov; S. Crawford; M. Pavlinsky
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We study the power spectra of the variability of seven intermediate polars containing magnetized asynchronous accreting white dwarfs, XSS J00564+4548,IGR J00234+6141, DO Dra, V1223 Sgr, IGR J15094-6649, IGR J16500-3307 and IGR J17195-4100, in the optical band and demonstrate that their variability can be well described by a model based on fluctuations propagating in a truncated accretion disk. The power spectra have breaks at Fourier frequencies, which we associate with the Keplerian frequency...
Source: http://arxiv.org/abs/1002.4073v1
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Sep 24, 2013 Alice C. Quillen; Justin Comparetta
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Tidal tails composed of stars should be unstable to the Jeans instability and this can cause them to look like beads on a string. The Jeans wavelength and tail diameter determine the wavelength and growth rate of the fastest growing unstable mode. Consequently the distance along the tail to the first clump and spacing between clumps can be used to estimate the mass density in the tail and its longitudinal velocity dispersion. Clumps in the tidal tails of the globular cluster Palomar 5 could be...
Source: http://arxiv.org/abs/1002.4870v1
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Sep 24, 2013 Matthew A. Taylor; Thomas H. Puzia; Gretchen L. Harris; William E. Harris; Markus Kissler-Patig; Michael Hilker
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Velocity dispersion measurements are presented for luminous GCs in NGC 5128 derived from high-res. UVES spectra. The measurements are made with the pPXF code that parametrically recovers line-of-sight velocity dispersions. Combining the measured velocity dispersions with surface photometry and structural parameter data from HST enables both dynamical masses and M/L ratios to be derived. The fundamental plane relations of these clusters are investigated in order to fill the apparent gap between...
Source: http://arxiv.org/abs/1002.1973v1
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Sep 24, 2013 Shlomo Dado; Arnon Dar; A. De Rujula
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Several pairs of observable properties of Gamma Ray Bursts (GRBs) are known to be correlated. Many such correlations are straightforward predictions of the 'cannonball' model of GRBs. We extend our previous discussions of the subject to a wealth of new data, and to correlations between 'lag-time', 'variability' and 'minimum rise-time', with other observables. Schaefer's recent systematic analysis of the observations of many GRBs of known red-shift gives us a good and updated data-basis for our...
Source: http://arxiv.org/abs/astro-ph/0701031v2
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Sep 24, 2013 S. Dolecki; F. Mynard
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Conditions on a topological space $X$ under which the space $C(X,\mathbb{R})$ of continuous real-valued maps with the Isbell topology $\kappa $ is a topological group (topological vector space) are investigated. It is proved that the addition is jointly continuous at the zero function in $C_{\kappa}(X,\mathbb{R})$ if and only if $X$ is infraconsonant. This property is (formally) weaker than consonance, which implies that the Isbell and the compact-open topologies coincide. It is shown the...
Source: http://arxiv.org/abs/1002.2886v1
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The next generation of solar telescopes will enable us to resolve the fundamental scales of the solar atmosphere, i.e., the pressure scale height and the photon mean free path. High-resolution observations of small-scale structures with sizes down to 50 km require complex post-focus instruments, which employ adaptive optics (AO) and benefit from advanced image restoration techniques. The GREGOR Fabry-Perot Interferometer (GFPI) will serve as an example of such an instrument to illustrate the...
Source: http://arxiv.org/abs/1002.1792v1
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Sep 24, 2013 Michael Kapovich
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This is a survey of higher-dimensional Kleinian groups, i.e., discrete isometry groups of the hyperbolic n-space for n greater than 3. Our main emphasis is on the topological and geometric aspects of higher-dimensional Kleinian groups and their contrast with the discrete groups of isometry of the hyperbolic 3-space.
Source: http://arxiv.org/abs/math/0701370v1
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Sep 24, 2013 Detlef Dürr; Martin Kolb; Tilo Moser; Sarah Römer
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The probability of a quantum particle being detected in a given solid angle is determined by the $S$-matrix. The explanation of this fact in time dependent scattering theory is often linked to the quantum flux, since the quantum flux integrated against a (detector-) surface and over a time interval can be viewed as the probability that the particle crosses this surface within the given time interval. Regarding many particle scattering, however, this argument is no longer valid, as each particle...
Source: http://arxiv.org/abs/1002.0984v2
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Sep 24, 2013 Mathieu Gibert; Haitao Xu; Eberhard Bodenschatz
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We report experimental results on the dynamics of heavy particles of the size of the Kolmogorov-scale in a fully developed turbulent flow. The mixed Eulerian structure function of two-particle velocity and acceleration difference vectors was observed to increase significantly with particle inertia for identical flow conditions. We show that this increase is related to a preferential alignment between these dynamical quantities. With increasing particle density the probability for those two...
Source: http://arxiv.org/abs/1002.3755v4
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Sep 24, 2013 Lionel Rosier; Bing-Yu Zhang
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This paper studies the local exact controllability and the local stabilization of the semilinear Schr\"odinger equation posed on a product of $n$ intervals ($n\ge 1$). Both internal and boundary controls are considered, and the results are given with periodic (resp. Dirichlet or Neumann) boundary conditions. In the case of internal control, we obtain local controllability results which are sharp as far as the localization of the control region and the smoothness of the state space are...
Source: http://arxiv.org/abs/1002.1126v1
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Sep 24, 2013 Fujimoto Junpei; Ishikawa Tadashi; Jimbo Masato; Kon Tadashi; Kurihara Yoshimasa; Kuroda Masaaki
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We present the renormalization scheme used in and the characteristic features of GRACE/SUSY-loop, the package of the program for the automatic calculation of the MSSM processes including one-loop order corrections. The two-body and three-body decay widths of charginos in one-loop order evaluated by GRACE/SUSY-loop are shown.
Source: http://arxiv.org/abs/hep-ph/0701200v3